Filtering unit, filtering assembly and filtering system

Abstract

A filter unit comprises a frame, a filter medium fixed in the frame and a runner screen, feed liquid enters a cavity formed by the runner screen through a liquid inlet, then enters the upstream of the filter medium, is filtered by the filter medium, and is discharged from the downstream of the filter medium through a liquid outlet. According to the filtering unit disclosed by the utility model, the runner screen and the filtering medium are combined into a whole through the rubber coating, and the runner screen is fixed in the filtering unit, so that the stability is better; according to the filtering unit, feed liquid is fed from four upstream sides of a filtering medium at the same time through a runner screen, and is discharged from four downstream sides of the filtering medium at the same time, so that the washing time of a client can be greatly shortened, and the efficiency is improved; the filter unit can combine and encapsulate four filter paperboards at one time, and special identification is not needed, so that the cost of automatic identification is reduced, and the operation is simpler. The filtering unit, the filtering assembly adopting the filtering unit and the filtering system adopting the filtering unit are high in efficiency, low in cost and high in practical value.

Description

Technical Field

[0001] The utility model belongs to the field of biopharmaceutical process technology, and specifically relates to a filtering unit, a filtering component and a filtering system. Background Art

[0002] Filters are widely used in biopharmaceutical processes and can be divided into depth filters, surface filters, membrane filters, etc. according to different application scenarios. Due to their huge dirt loading capacity, depth filters are usually used to process pre-filtration solutions.

[0003] The deep filter includes an upper cover, a lower cover, and a filter unit. The filter unit is welded to the upper cover and the lower cover as a whole. The upper cover includes an upper cover liquid inlet, an upper cover exhaust port, and an upper cover liquid outlet connected to the filter unit. The filter unit is composed of a frame and a deep filter paperboard combined with the frame. The feed liquid enters the filter unit from the liquid inlet of the upper cover and is discharged from the liquid outlet after being filtered.

[0004] Existing deep filters generally include multiple stacked filter units, and the upper and lower sides of the frame of the filter unit have different structural designs. For example, the upper side of the frame of the filter unit is the liquid inlet side, and the lower side is the liquid outlet side. Adjacent filter units are arranged back to back, that is, when welding adjacent filter units, the filter units are first marked with the middle arrow so that when welding, adjacent filter units are welded back to back. Specifically, the second filter unit is rotated 180°, so that the upper side of the first filter unit is welded to the lower side of the second filter unit to form a liquid inlet area; the lower side of the first filter unit is welded to the upper side of the second filter unit to form a liquid outlet area. The deep filter can flexibly configure the number of filter units according to customer needs, up to ten layers.

[0005] Existing depth filters have the following problems:

[0006] (1) The prior art can only coat two filter paperboards at a time, which is inefficient.

[0007] (2) The welding process is cumbersome and requires automatic identification of the directions of adjacent filter units before welding, which is costly.

[0008] (3) The more welding times there are, the larger the cumulative tolerance will be, which will increase the number of defective products.

[0009] (4) The filter unit has liquid inlet on one side and outlet on the other side, which results in low filtration efficiency and a long flushing time. Summary of the invention

[0010] In order to overcome the defects of the prior art, one object of the present invention is to provide a filter unit, another object of the present invention is to provide a filter assembly, and yet another object of the present invention is to provide a filter system. In order to achieve the above objects, the technical solutions adopted by the present invention are as follows:

[0011] One aspect of the utility model provides a filter unit, comprising a frame, a filter medium fixed in the frame, and a flow channel screen, wherein the flow channel screen comprises a screen, a screen frame surrounding the outer periphery of the screen, and a cavity arranged inside the flow channel screen; filter media are fixed on both sides of the flow channel screen; the screen frame and the frame of the filter unit are respectively provided with a liquid inlet and a liquid outlet at corresponding positions, and the screen frame also includes a guide hole; the flow channel screen and the filter medium are combined through the frame to form the filter unit; the feed liquid enters the filter unit through the liquid inlet, enters the cavity through the guide hole, and enters the upstream of the filter medium on both sides of the flow channel screen from the cavity through the screen, and is discharged from the downstream of the filter medium through the liquid outlet after being filtered by the filter medium.

[0012] Preferably, the frame is formed by encapsulating the flow channel screen and the filter medium with glue, and the flow channel screen, the filter medium and the frame are combined to form the filter unit.

[0013] Preferably, both side surfaces of the frame of the filter unit include continuous linear protrusions arranged along the periphery of the filter medium, and the linear protrusions, the edge of the frame and the adjacent screen frame form a liquid inlet area that is connected to the liquid inlet.

[0014] Preferably, the guide hole is arranged in the liquid inlet area, and after the feed liquid enters the liquid inlet area from the liquid inlet, it enters the cavity through the guide hole.

[0015] Preferably, the downstream of the filter medium is connected to the liquid outlet to form a liquid outlet area, and the feed liquid is filtered by the filter medium and then discharged from the downstream of the filter medium through the liquid outlet.

[0016] Preferably, the flow channel screen is formed by welding a first flow channel screen and a second flow channel screen that are relatively arranged, and the cavity is formed between the first flow channel screen and the second flow channel screen. The first flow channel screen and the second flow channel screen both include a screen and a screen frame surrounding the periphery of the screen, and the screen frame includes the guide hole.

[0017] Preferably, the filter medium includes a first deep filter medium and a second deep filter medium, the first deep filter medium is far away from the flow channel screen, the second deep filter medium is close to the flow channel screen, and the filtering accuracy of the first deep filter medium is higher than that of the second deep filter medium.

[0018] Another aspect of the utility model provides a filter assembly, including a first end plate, a second end plate and the aforementioned filter unit, the filter unit is arranged between the first end plate and the second end plate, the first end plate and the second end plate both include a liquid inlet and a liquid outlet, the liquid inlet is connected to the liquid inlet of the filter unit, the liquid outlet is connected to the liquid outlet of the filter unit, the feed liquid enters the liquid inlet of the filter unit from the liquid inlet of the first end plate, is filtered by the filter unit, and is discharged from the liquid outlet of the filter unit through the liquid outlet of the first end plate or the second end plate.

[0019] Preferably, a liquid inlet cavity connected to the liquid inlet and a liquid outlet cavity connected to the liquid outlet are respectively formed between the first end plate and the adjacent filter unit, between the second end plate and the adjacent filter unit, and between adjacent filter units. The feed liquid enters the liquid inlet cavity through the liquid inlet, is filtered by the filter unit, and is discharged from the liquid outlet through the liquid outlet cavity.

[0020] Another aspect of the utility model provides a filtering system, including a clamp and the aforementioned filtering assembly, the clamp including a fixed plate and a movable plate, at least two of the filtering assemblies are placed between the fixed plate and the movable plate, the fixed plate and the movable plate are both provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the liquid inlet port, and the liquid outlet pipe is connected to the liquid outlet port.

[0021] The filter unit, filter assembly and filter system of the utility model combine the flow channel screen and the filter medium into a whole through rubber coating. The flow channel screen is fixed in the filter unit, which has better stability. The filter unit of the utility model allows the liquid to enter from the four upstream sides of the filter medium at the same time and to exit from the four downstream sides of the filter medium at the same time through the flow channel screen, which can greatly reduce the flushing time of the client and improve efficiency. The filter unit of the utility model can combine four rubber-coated filter paperboards at a time, and no special identification is required, which reduces the cost of automatic identification and makes the operation simpler. The filter unit of the utility model, the filter assembly and the filter system using the filter unit are highly efficient, low cost and have high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] After reading the specific implementation of the present utility model with reference to the accompanying drawings, readers will have a clearer understanding of various aspects of the present utility model.

[0023] Figure 1A structural diagram of a filter unit according to an embodiment of the present invention -1;

[0024] Figure 2 A structural diagram of a filter unit according to an embodiment of the present invention -2;

[0025] Figure 3 This is a flow channel screen structure diagram of an embodiment of the utility model;

[0026] Figure 4 A liquid flow diagram 1 of an embodiment of the utility model;

[0027] Figure 5 This is a liquid flow diagram of an embodiment of the utility model-2;

[0028] Figure 6 A filter assembly structure diagram 1 is another embodiment of the present invention;

[0029] Figure 7 Figure 2 is a filter assembly structure diagram of another embodiment of the utility model;

[0030] Figure 8 A structural diagram of a first end plate of a filter assembly according to another embodiment of the utility model;

[0031] Fig. 9 A structural diagram of a second end plate of a filter assembly according to another embodiment of the present utility model;

[0032] Description of reference numerals:

[0033] 100: filter unit; 200: first end plate; 300: second end plate;

[0034] 101: filter unit frame; 102: filter medium; 103: flow channel screen; 104: liquid inlet; 105: liquid outlet; 106: flow guide hole; 107: liquid inlet area; 108: liquid outlet area; 109: exhaust port;

[0035] 1021: a first deep filter medium; 1022: a second deep filter medium;

[0036] 1031: screen; 1032: screen frame; 1033: cavity; 1034: first flow channel screen; 1035: second flow channel screen;

[0037] 1011: linear protrusion; 1012: border edge;

[0038] 400: liquid inlet cavity; 500: liquid outlet cavity. DETAILED DESCRIPTION

[0039] In order to make the technical content disclosed in this application more detailed and complete, reference may be made to the accompanying drawings and the following specific embodiments of the present invention. However, it should be understood by those skilled in the art that the embodiments provided below are not intended to limit the scope of the present invention. In addition, the accompanying drawings are only used for schematic illustration and are not drawn according to their original size.

[0040] The term "connected" in the specification includes both direct connection and indirect connection. The terms "several" and "multiple" in the specification refer to two or more. The terms "first", "second" and "third" in the specification, claims and the above drawings refer to

[0041] "Fourth" and the like (if present) are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] The technical solution of the present invention is specifically described in detail below. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments.

[0043] Embodiment 1:

[0044] This embodiment provides a filter unit 100, see Figure 1-3 The filter unit 100 includes a frame 101, a filter medium 102, and a flow channel screen 103.

[0045] In this embodiment, the filter medium 102 includes a first deep filter medium 1021 and a second deep filter medium 1022, and the first deep filter medium 1021 and the second deep filter medium 1022 are both single-layer deep filter paperboards; in other examples of the present invention, the filter medium 102 can also be configured to include other numbers of deep filter media.

[0046] In this embodiment, the flow channel screen 103 includes a screen 1031, a screen frame 1032 surrounding the outer periphery of the screen 1031, and a cavity 1033 provided inside the flow channel screen 103. The filter medium 102 is fixed on both sides of the flow channel screen 103. Figure 3The flow channel screen 103 is formed by welding a first flow channel screen 1034 and a second flow channel screen 1035 that are relatively arranged. The cavity 1033 is formed between the first flow channel screen 1034 and the second flow channel screen 1035. The first flow channel screen 1034 and the second flow channel screen 1035 both include the screen 1031 and a screen frame 1032 surrounding the periphery of the screen 1031, and the screen frame 1032 includes the guide hole 106. In other examples of the present invention, the flow channel screen 103 may also be formed in other ways to guide the slurry through the screen 1031, the cavity 1033, and the guide hole 106. The filter media 102 are fixed to the outer surfaces of the first flow channel screen 1034 and the second flow channel screen 1035, that is, the first deep filter medium 1021 and the second deep filter medium 1022 are fixed to the outer surfaces of the first flow channel screen 1034 and the second flow channel screen 1035, specifically, the first deep filter medium 1021 is far away from the outer surfaces of the first flow channel screen 1031 and the second flow channel screen 1032, and the second deep filter medium 1022 is close to the outer surfaces of the first flow channel screen 1031 and the second flow channel screen 1032, and the filtering accuracy of the first deep filter medium 1021 is higher than the filtering accuracy of the second deep filter medium 1022;

[0047] In this embodiment, the flow channel screen 103 and the filter medium 102 are combined through the frame 101 to form the filter unit 100. Specifically, the frame 101 is formed by rubber-coating the flow channel screen 103 and the filter medium 102, that is, the flow channel screen 103, the filter medium 102 and the frame 101 are combined to form the filter unit 100.

[0048] In this embodiment, the first flow channel screen 1034, the screen frame 1032 of the second flow channel screen 1035, and the frame 101 of the filter unit 100 are respectively provided with a liquid inlet 104 and a liquid outlet 105 at corresponding positions, and the screen frame 1032 also includes a guide hole 106; specifically, the liquid inlet 104 of the screen frame 1032 and the frame 101 are arranged on the left and right sides near the upper edge, the liquid outlet 105 is arranged on the left and right sides near the lower edge, and the guide holes 106 are evenly distributed along the screen frame 1032.

[0049] In this embodiment, both sides of the frame 101 of the filter unit 100 are provided with continuous linear protrusions 1011 surrounding the periphery of the filter medium 102. Specifically, the linear protrusions 1011 are provided on the inner and outer surfaces of the frame 101. The linear protrusions 1011, the edge 1012 of the frame 101, and the adjacent screen frame 1032 together form a liquid inlet area 107, which is connected to the liquid inlet 104 of the frame 101. Specifically, the edge 1012 of the frame 101 is also a linear protrusion, and the liquid inlet 104 is located in the liquid inlet area 107. The guide holes 106 are provided in the liquid inlet area 107 and are evenly distributed along the liquid inlet area 107; the downstream of the filter medium 102 is connected to the liquid outlet 105 to form a liquid outlet area 108.

[0050] In this embodiment, the screen frame 1032 and the frame 101 are respectively provided with exhaust ports 109 at corresponding positions.

[0051] Embodiment 2:

[0052] This embodiment describes the working principle of the filter unit to further illustrate the technical solution of the utility model. Figure 4-5 , the dotted arrow indicates the liquid inlet direction, and the area is the liquid inlet area 107, and the solid arrow indicates the liquid outlet direction, and the area is the liquid outlet area 108. The process of filtering the feed liquid by using the filtering unit 100 is as follows: the feed liquid enters the filtering unit 100 from the liquid inlet 104, and is filtered by the filtering unit 100 and then discharged from the liquid outlet 105.

[0053] In this embodiment, the feed liquid enters the liquid inlet area 107 from the liquid inlet 104 of the frame 101 of the filter unit 100, and enters the cavity 1033 formed by the first flow channel screen 1034 and the second flow channel screen 1035 through the guide hole 106 of the screen frame 1032. The feed liquid passes through the first flow channel screen 1034 and the second flow channel screen 1035 from the cavity 1033 and enters the upstream of the filter medium 102. After being filtered by the second deep filter medium 1022 and the first deep filter medium 1021 in turn, it enters the liquid outlet area 108 from the downstream of the filter medium 102, and is thereby discharged from the liquid outlet 105.

[0054] In this embodiment, the liquid feed is guided to enter the upstream of the filter medium 102 from four sides through the flow channel screen 103. By setting the liquid outlet area 108, the filtered liquid feed is discharged from the four downstream sides of the filter medium 102. Each of the filter units 100 includes an independent liquid filtration flow channel, and there is no need to form a flow channel together with the adjacent frame. Compared with the prior art, the technical solution of this embodiment can improve the filtration efficiency and save customers' flushing time.

[0055] Embodiment three:

[0056] This embodiment provides a filter assembly. Figure 6-9 The filter assembly includes a first end plate 200, a second end plate 300 and a filter unit 100. The specific structure of the filter unit 100 is as described in the first embodiment and will not be described in detail herein.

[0057] In this embodiment, the filter unit 100 is arranged between the first end plate 200 and the second end plate 300. The first end plate 200 and the second end plate 300 both include a liquid inlet 104, a liquid outlet 105, and an exhaust port 109. The liquid inlet 104 is connected to the liquid inlet 104 of the filter unit 100, and the liquid outlet 105 is connected to the liquid outlet 105 of the filter unit 100. The feed liquid enters the liquid inlet 104 of the filter unit 100 from the liquid inlet 104 of the first end plate 200, and is filtered by the filter unit 100 and then discharged from the liquid outlet 105 of the filter unit 100 through the first end plate 200 or the liquid outlet 105 of the second end plate 300. Specifically, according to the actual application scenario, the liquid outlet 105 of the first end plate 200 or the second end plate 300 can be set to discharge liquid. That is, in actual application, one application scenario is that the liquid inlet 104 and the liquid outlet 105 used by the filter component are both located on the first end plate 200, and another application scenario is that the liquid inlet 104 used by the filter component is located on the first end plate 200, and the liquid outlet 105 is located on the second end plate. In other embodiments of the present invention, other liquid inlet and liquid outlet setting methods can also be adopted.

[0058] In the present embodiment, the first end plate 200 and the second end plate 300 respectively include a liquid inlet 104, a liquid outlet 105, and a liquid discharge port 109. In the present embodiment, the liquid inlet 104 and the exhaust port 109 are located at the upper edge of the first end plate 200 and the second end plate 300, and the liquid outlet 105 is located at the lower edge of the first end plate 200 and the second end plate 300. The positions are used to adapt to the clamp. In other embodiments of the utility model, the number and position settings of the liquid inlet, exhaust port, and liquid outlet can also be set to other schemes that can ensure the entry and discharge of the liquid.

[0059] In this embodiment, the number of the filter units 100 disposed between the first end plate 200 and the second section plate 300 is five. In other embodiments of the present invention, the number of the filter units may also be other numbers.

[0060] In this embodiment, a liquid inlet cavity 400 connected to the liquid inlet 104 and a liquid outlet cavity 500 connected to the liquid outlet 105 are formed between the first end plate 200 and the adjacent filter unit 100, between the second end plate 300 and the adjacent filter unit 100, and between adjacent filter units 100. The feed liquid enters the liquid inlet cavity 400 through the liquid inlet 104, is filtered by the filter unit 100, and is discharged from the liquid outlet 105 through the liquid outlet cavity 500.

[0061] In this embodiment, the first end plate 200, the second end plate 300, and the filter unit 100 are welded to form the filter assembly. In the prior art, a filter unit can only contain 2 layers of deep filter media, so 10 filter units are required, and welding between filter units and filter units and end plates requires 11 times in total. However, with the technical solution of this embodiment, since each filter unit includes 4 layers of deep filter media, only 5 filter units need to be set, and a total of 6 welding times are required, thereby improving the production efficiency of the filter assembly.

[0062] Embodiment 4:

[0063] The present embodiment provides a filtering system, comprising a clamp and a filtering assembly as described in Embodiment 3, wherein the clamp comprises a fixed plate and a movable plate, and at least two filtering assemblies are placed between the fixed plate and the movable plate, and the fixed plate and the movable plate are both provided with a liquid inlet pipe and a liquid outlet pipe, wherein the liquid inlet pipe is connected to the liquid inlet port, and the liquid outlet pipe is connected to the liquid outlet port.

[0064] In this embodiment, the fixed plate and the movable plate generate opposite clamping forces on the multiple filter components, so that a sealed connection is formed between the fixed plate and the filter component, between the movable plate and the filter component, and between adjacent filter components. Specifically, this embodiment is a scene in which multiple filter components work simultaneously, and the filtering efficiency is higher.

[0065] The filter unit, filter assembly and filter system of the utility model combine the flow channel screen and the filter medium into a whole through rubber coating. The flow channel screen is fixed in the filter unit, which has better stability. The filter unit of the utility model allows the liquid to enter from the four upstream sides of the filter medium at the same time and to exit from the four downstream sides of the filter medium at the same time through the flow channel screen, which can greatly reduce the flushing time of the client and improve efficiency. The filter unit of the utility model can combine four rubber-coated filter paperboards at a time, and no special identification is required, which reduces the cost of automatic identification and makes the operation simpler. The filter unit of the utility model, the filter assembly and the filter system using the filter unit are highly efficient, low cost and have high practical value.

[0066] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. The embodiments of the utility model cannot exhaust all implementation methods. All obvious changes or modifications derived from the technical solutions of the utility model are still within the scope of protection of the utility model. All documents mentioned in the utility model are cited as references in this application, just as a document is cited as a reference separately.

Claims

1. A filter unit, comprising a frame and a filter medium fixed in the frame, characterized in that: The filter unit further comprises a flow channel screen, wherein: The flow channel screen comprises a screen, a screen frame surrounding the outer periphery of the screen, and a cavity arranged inside the flow channel screen; Filter media are respectively fixed on both sides of the flow channel screen; The screen frame and the filter unit frame are respectively provided with a liquid inlet and a liquid outlet at corresponding positions, and the screen frame also includes a guide hole; The flow channel screen and the filter medium are combined through the frame to form the filter unit; The feed liquid enters the filter unit through the liquid inlet, enters the cavity through the guide hole, passes through the screen from the cavity and enters the upstream of the filter medium on both sides of the flow channel screen, is filtered by the filter medium, and is discharged from the downstream of the filter medium through the liquid outlet.

2. The filter unit according to claim 1, characterized in that The frame is formed by encapsulating the flow channel screen and the filter medium with rubber, and the flow channel screen, the filter medium and the frame are combined to form the filter unit.

3. The filter unit according to claim 1, characterized in that Both side surfaces of the frame of the filter unit include continuous linear protrusions arranged along the periphery of the filter medium. The linear protrusions, the edge of the frame and the adjacent screen frame form a liquid inlet area that is connected to the liquid inlet.

4. The filter unit according to claim 3, characterized in that The guide hole is arranged in the liquid inlet area, and after the feed liquid enters the liquid inlet area from the liquid inlet, it enters the cavity through the guide hole.

5. The filter unit according to claim 4, characterized in that The downstream of the filter medium is connected to the liquid outlet to form a liquid outlet area. After the feed liquid is filtered by the filter medium, it is discharged from the downstream of the filter medium through the liquid outlet.

6. The filter unit according to claim 1, characterized in that The flow channel screen is formed by welding a first flow channel screen and a second flow channel screen that are relatively arranged. The cavity is formed between the first flow channel screen and the second flow channel screen. The first flow channel screen and the second flow channel screen both include a screen and a screen frame surrounding the outer periphery of the screen, and the screen frame includes the guide hole.

7. The filter unit according to claim 1, characterized in that The filter medium includes a first deep filter medium and a second deep filter medium. The first deep filter medium is far away from the flow channel screen, and the second deep filter medium is close to the flow channel screen. The filtering accuracy of the first deep filter medium is higher than that of the second deep filter medium.

8. A filter assembly, characterized in that: It includes a first end plate, a second end plate and a filter unit as described in any one of claims 1 to 7, the filter unit is arranged between the first end plate and the second end plate, the first end plate and the second end plate both include a liquid inlet and a liquid outlet, the liquid inlet is connected with the liquid inlet of the filter unit, the liquid outlet is connected with the liquid outlet of the filter unit, the feed liquid enters the liquid inlet of the filter unit from the liquid inlet of the first end plate, is filtered by the filter unit, and is discharged from the liquid outlet of the filter unit through the liquid outlet of the first end plate or the second end plate.

9. The filter assembly according to claim 8, characterized in that: A liquid inlet cavity connected to the liquid inlet and a liquid outlet cavity connected to the liquid outlet are respectively formed between the first end plate and the adjacent filter unit, between the second end plate and the adjacent filter unit, and between adjacent filter units. The feed liquid enters the liquid inlet cavity through the liquid inlet, is filtered by the filter unit, and is discharged from the liquid outlet through the liquid outlet cavity.

10. A filtering system, characterized in that: It comprises a clamp and the filter assembly as claimed in claim 8, wherein the clamp comprises a fixed plate and a movable plate, at least two of the filter assemblies are placed between the fixed plate and the movable plate, and the fixed plate and the movable plate are both provided with a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is connected to the liquid inlet port, and the liquid outlet pipe is connected to the liquid outlet port.

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